Book/Report

FZJ-2018-00429

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Über die Beeinflussung des Lichtbogens als spektrochemische Anregungsquelle mit Hilfe von Zusatzsubstanzen und homogenen Magnetfeldern

Schaeps, R. (Corresponding author)FZJ*

1975
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/16562

Report No.: Juel-1210

Abstract: This report presents some basic investigations concerning the influence of additives and of a homogeneous magnetic field on the spectroscopic analysis of graphite and of titania-mixtures in a 10 Amp arc. The influence of a homogeneous magnetic field on the integral lineintensity of different trace-elements (Hg, Zn, Ga, TI) in graphite and on their axial and radial distribution in an arc-plasma is described in detail. Parameters were the strength of the magnetic field (0, 100, 200, 400 G) and the physical properties of the trace-elements, e. g. their mass and ionization potential. Besides, by non-destructive and continuous x-ray absorption measurements,the evaporation of some metal oxides from graphite anodes was determined and plotted against the strength of the magnetic field. As a particular result the influence of the added Ga$_{2}$O$_{3}$ on the lineintensity of trace elements in a graphite-matrix was found to depend on the concentration of Ga$_{2}$O$_{3}$ and the ionization potential of the elements investigated. In analysis of the titania-graphite mixtures it could be demonstrated that, contrary to PTFE as an additive, Ga$_{2}$O$_{3}$ has an arc stabilizing effect.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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